Tension between Coulter and Trump has grown as Coulter has stepped up her public attacks on Trump's challenges with his border-wall plan. Along with Coulter, other conservative pundits like Rush Limbaugh have also spoken out about how the border wall was a key campaign promise.

During the government shutdown in January, Coulter lashed out at Trump, saying that "previous shutdowns have been much more difficult."

"He is dead in the water if he doesn't build that wall," she said. "Dead, dead, dead."

Congress has pushed back on Coulter and Limbaugh's comments. "You have two talk-radio hosts who completely flipped the president," Republican Sen. Bob Corker told reporters in January. "And so, do we succumb to tyranny of talk-radio hosts?"

According to Politico, Coulter is scheduled to speak at a lunch in Palm Beach, Florida on Monday near Trump's Mar-a-Lago country club, where Trump is staying through Sunday.